Water sealed door for bottom-discharging receptacles



2 Sheets-Sheet 1 INVENTOR ANTHoNY M. Mfvf/fsrf/N @www ATTOR EY Dec. 28, 1937. I A. M. MEYERSTEIN WATER SEALED DOOR FOR` BOTTOM DISCHARGING RECEPTACLES Filed July 30, ,1936

Dec.l28, 1937. A. M. MEYl-:Rs'rElN 25,103,975 WATER SEALED DOOR FOR BOTTOM DISCHARGING RECEPTACLES Filed July 50, 1956 2 Sheets-Sheet 2 l INVENTOR ANTHONY M; Mfvfksrfm BY ATTO NEY Patented Dec. 28, 17937 UNITED* STATES WATER SEALED DOORIFOR vBOTTOM-DIS- V CHARGING RECEPTACLES4 L Anthony M. Meyerstein,

of three-fourths to Rosoff Bros., Inc., lyn, N. Y., a corporati fourth to Anthony M. Meyerstein,

Nuney, N. J., assignor Brookon of New York, and one- Inc., New

York, VN. Y., a. corporation of New York Application July 30, 1936, seriaiNo. 93,349.

scams. (ci. 11o- 171)- This invention relates to improvements` in water-sealed doors for bottom-discharging receptacles and it lhas particular reference to the doors of an ash hopper such as may be used,

5 for example,` in connection with-.garbage and f refuse incinerators, steam boilers and other combustion apparatus. y

Itis customaryto provide such ash hoppers with doors which support the ashes until suitable conveyorsY for receiving-.and transporting the ashes are positioned below the hoppers.V Be- .fore discharging the ashes from the `hoppers they are. quenched with water to extinguish any res and also to cool' the ashes somewhat for more .15 convenientA transportation.` Such apparatus is Vfrequently operatedV under forced draft at high temperatures and accordingly it is necessary to provide 'waterseals around vtheY ashVv hopper discharge openings to prevent the escape of the hotf air Vunder pressure" which would result in diminishing the available `draft for the apparatus and also might cause injury to persons nearby.. Y

`An objectof the present invention is to-shape ,25 the doors, or gates,I of the receptacle, or ash hopper, and'to supportthem so theirsides project above-the lower edges of the discharge'openf ings and, when-the doors are closed, these sides arek spaced' slightly away from such edges so 3o as to'provide spacesfor water seals extending completely around vcachV discharge opening. No

separate channe1s,f.or otherA members, are neces-` i sary in order to form,-'or to., maintainfythe waterv seals. .The-doorsjare suspended from bearings so thatV they may be `easily` swungv from` open to closed positions. :There arcano-projections either "on the receptacle or .the rvdoors whichfinterfere with the movements-of the :doors orwhich necessitate `the doors lrmoving in `otherfthan simple T40 arcuatefpaths- These bearings are located above,

the` discharge openings and are therefore less likely to be'subjectedV to grit. and other injurious materials passing through the discharge openings. ',Whenfully openedfthe doors uncover the v1145 entire discharge openings to permit the ashes to drop freely -from the, ash hoppers.v

Another object 'is to provide a construction in which the ash-quenching water maybe used to form the Water-seals.' The doors are Aprovided .50. with side walls so that the waterfalling upon the ash-supporting surfaces of the doors collects there, andwhen it rises above the lowerV `edges of the discharge openings ofthe hoppers, forms the water seals. Y Thus it isnot-necessary p to supply waterlcontinuouslyin orderto maintain the water seals.v One of theslde walls is lowerfthan: the others so-that the excessxwater may flow away into a suitable trough without destroying the water seals.

A furtherwobject isto provide. a trough( into which the Yexcess water frornthe doors may flow and betcar'ried away under control'.v i

Another object is `to provide-scrapingy means for cleaning .the ash-supporting, or upper surfaces of the receptacle doors as they aremoved y to` their open. positions, therebypreventing the accumulation oiashes upon suchsurfaces Vand clogging of thel apparatus. .The opening .of these doors separates all thesurfaces between which the water-seals are formed sothatthere islnoh `possibility ofA ashes accumulating` in-the water seal spaces and interferingfvwiththei proper maintenance .of such water seals. The upper surfaces of the-doors vare preferably lined withY fire-resisting material but the arrangement of: parts is` such thatA the water seals may be readily maintained even where these fire vresisting linings have been worn awayY to `a considerable'extent. A furtherV object is to provide means whereby the -height of the water seal may be. Another object of the invention readily varied. A

is to reduce the number of bearing surfaces necessary to support eachdoor. This is accomplished by suspending each door in two bear- Y ings located above. the discharge opening Where-,E0

-by the doors may. be moved with little effort and without subjecting the bearings to injurydue to the presence of grit or other foreign substances. In the'drawings accompanying and forming Va part ofiI this specication:

Figl Vis a side.elevation of one embodimenty vof the present invention"asjapplied' to an ash hopper.V

Fig. 2l is across sectionalV view substantially Y through the centerline-of a `hopperlfwith two.

doors, showing one'door closed andthe other open. v f n Fig. 3 is a cross sectional `View taken substantially on the line 3-3 of Fig. 2, and w Fig. 4-is another sectional view taken substantially .on the line 4-4fof Fig.2. 1-

kThe body of the ash ho per, or other receptacle to which the present inventionfrnay be applied,

may be of'any suitable design and mayv comprise, l as shown in the drawings,four walls adapted to` ,i

Aform a rectangular, closed container into which the ashes fallfor arejforced fromfthe grates. As shown in Fig. 1, the ash hopper wallsv are made upvof the plates I supported by, and# suitably fastenedto, the angle bars -2, whichalso'stifferi 55 v` trated in Fig. 2.

these plates. The hopper is lined with fire resisting material, such for example, as the fire clay indicated at 3, which may be spread upon the plates I, or re bricks may be used to form the desired re resisting lining. Channels 4, or members of other suitable design may be 1ocated on the sides of the hopper and in addition to reinforcing the walls of the hopper., are adapted to support the bearings for the doors, as here-V inafter described. A framework 5 which may be constructed of channel members, extends around the lower end of the hopper and is adapted to support the members 6, the lower edges of which form the discharge openings of the ash hopper. The members 6 may be welded or otherwise secured to the framework 5 and supported thereby. As shown clearly in Figs. 2 and 3, the members 6 which may be castings, are provided with substantially parallel sides 1 having curved lower edges as illustrated. These edges may be, and preferably are, arcs of circles whose centers are at, ornear, the axes of the bearings for the doors. The members .6 have rear depending walls 8, the lower edges of which act as scrapers to remove the ashes from the surfaces of the doors as they are moved from closed to open positions. Additional Scrapers 8' are provided outside of the side wall 'I and remove the ashes from the door surfaces between these side walls and the walls I4 of the doors.

As shown clearly in Figs. 2 and 4, a member 9, hereinafter designated as the separator, located in the lower part of the hopper, extends from one side of the hopper to the other and divides the discharge opening into two parts. This separator preferably has laterally and downwardly extending portions I0, the lower surfaces of which correspond approximately in contour with that of the sides 'I of the members 6. The separator 9 may have the configuration shown by the cross-section illustrated in Fig. 2, in which the lateral edges are bent upwardly, as indicated at I2, so that the upper surface of the separator is adapted to support fire-resisting clay, indicated at II. 'Ihe orifices through `which the ashes are discharged from the hopper are bounded by the side walls 1, the rear walls, or Scrapers 8, and the lateral edges of the separator 9. It will be noted that these edges are located above the lowest points of the side walls '1. The depth of the water seal may be readily varied by raising or lowering the lateral edges of the separator.

The doors I3 are preferably somewhat wider than the member E and are provided with side walls I4 which as shown clearly in Fig. 3, lie outside of the walls I on the lower part of the hopper and, when the doors are closed, rise above the curved lower edge of these walls (see Fig. 2). The rear walls I5 of the doors lie outside of the scraper walls 8 and project above the lower edges of these Scrapers. If desired, these rear walls may have connected to them a web I6 with a hole I 'I therein', or other suitable means may be provided whereby fastening devices may be attached to the doors to hold them open when it is desired to inspect, or repair, the apparatus. The front walls I8 ofthe doors have upper edges I9 which are offset and project slightly above the lowermost portions of the separator' 9 and, when the doors are closed, underlie in close proximity the lower surfaces IIJ of the separator as illus- The bottoms of thedoors are preferably lined with nre clay 20 and may have an. arcuate surthe drawings.

face substantially concentric with the lower edges of the side walls It will be readily apparent that this fire clay lining may have surfaces of other designs if desired, providing such surfaces do not offer projections which would interfere with the opening and closing of the doors.

The doors I 3 may be supported in a number of ways but a convenient arrangement is shown in These doors are supported in frames 2I rotatably supported in the bearings 22 which may be mounted upon the members 4 on the sides of the hopper. The lower parts of the door frames 2| may be riveted, or otherwise secured, to the doors I3, or may have inwardly extending, curved portions 23 to which the doors may be fastened and upon which the doors may rest as shown clearly in Fig. 3. It will be observed that the bearings 22 are located substantial distances above the discharge openings and therefore away from the ashes passing through the hopper and thus are not subjected to grit or other deleterious material. Also, the bearings, so situated, are readily accessible for oiling, repair, etc.

The doors I3 may be opened and closed by means of the fluid-actuated plungers 24 operating in the cylinders 25. The ends of these plungers are provided with rollers 26 which operate in the links 21 attached to the front parts of the doors as shown. doors open the surfaces of the fire clay linings 29 move past the scraper members 8 so that these members force substantially all of Ythe ashes off the doors. This arrangement prevents clogging of the apparatus. It will also be noted that as the doors are opened the component parts of the water-seals are removed from each other so that ashes cannot'accumulate and clog the waterseals.

The doors are so formed that whether lined with re clay to have an arcuate surface or not, water from the quenchers 28 in the sides of the hopper, collects on the surfaces of the doors and fills the spaces between the side walls I4 of the doors and the depending walls 'I of the hopper, also between the rear walls I5 and the Scrapers 8 and underneath the separator 9. Thus a cornplete water seal is formed around each discharge opening. It will be observed that with the doors lined as illustrated a complete water seal is formed as soon as the water in the door reaches the lowermost edges of the separator 9.

When the doors are closed, the upper edges of the front walls I 9 are lower than the upper edges of the side walls I4 and the rear walls I5. Thus excess water flowing through the hopper may spill over the front walls of the doors and fall into a trough 29 which lies under the hopper. The lower surface of this trough slopes downwardly from the central portion to the ends as illustrated in Fig. 4 so as to cause the water to flow into the headers 30 at each end of the trough, from which it flows to waste pipes. If desired, angle bars 3 I, or other suitable members, may be fastened to the front walls of the doors to prevent the water from clinging thereto and to direct the water into the trough.

I claim:

1. A hopper having side walls slightly converging toward the bottom and provided with a bottom-discharge opening'and an arcuately movable water-sealed door therefor all of whose upper edges are outside and above the edges of the discharge opening when the door is in closed position and Scrapers on the outside of the hopper walls It will be observed that as the extending towardV the adjacent sides of the door and adapted to remove some of the material discharged f rom the hopper from the space between the hopper walls and saiddoor sides during opening movement of the door.

2. An ash hopper having a bottom-discharge `opening and provided With a member dividing such opening into two parts, a water-sealed door for each part having an arcuatesupporting surface for the ashes, portions of the under surface of said dividing member having substantially sim- Ailar arcuate contours as the ash-supporting Isurface of each door, one edge of each door-extending above the lower edge of the dividing member but being lower than each of the other door edges whereby excess water may flow over said loWeITV edge of each door while maintaining the water seal and a trough through whichthe excess water may be removed.

3. A hopper having a bottom-discharge opening and provided with amember dividing such opening into two parts, a trough located below and extending substantially parallel with said member, water-sealed doors adapted to close each partI of said discharge opening, one edge of 4each Y door lyingunder said member when the doors are in closed position and being above the level of the lower edge of said member but lower than the other edges of that door whereby excess water will flow over said edge into the trough.

4. .An ash hopper having a water-sealed bottom-discharge opening, a member extending transversely between opposite sides of the hopper and dividing said opening into two parts, the

outside of the hopper walls between which said member extends, and spaced therefrom, Scrapers on the outside of said hopper walls adapted to remove ashes from the bottoms and said parallel walls of the doors as the latter are opened, a trough underlying said member, said doors being provided with edge portions projecting between said member and trough, such edge portions ofY each door being lower than all the other edges of that door whereby excess water'may flow into said trough while the Water seal is maintained.

5. An ash hopper having a water-sealed bottom-discharge opening, a member dividing such opening into twoparts, an arcuately movable water-sealed door for each discharge opening, provided with walls surrounding the lower edges of thehopper, one edge of each door extending slightly above the lower edge of said member but Y being lower than the other edges of that door'to permit the escape of excess water thereover while the water seal is maintained, one edge of each part of the hopper opening constituting a scraper for removing ashes from the underlying door and Scrapers between the hopperrwalls and the' respective adjacent walls' of the doors adaptedl to remove ashes from that portion of each door outsideof the hopper discharge opening for which the door is intended.

ANTHONY M. MEYERSTEIN. 

